75/15 controller, fitted in a campervan approx 2 weeks. 100w solar panel is clipped to the roof & connected to controller when needed.
Lastnight on a campsite with electric hookup (2nd time since installation), so solar NOT connected, & 240v charger connected directly to battery.
Anything connected to the 75/15 "load" is pulsing on/off...2seconds off, 4seconds on.
Load is connected (via 6-way fusebox) : phone-chargers, gps-tracker, CB radio...nothing high-power.
The blue LED "Bulk" is flashing about every 3s.
Interface V2, firmware:V2.19